Wearable technology came of age in 2013, and fitness trackers, smartwatches—or some combination of both—led the charge.

Last week research firm Strategy Analytics released a report on the global smartwatch OS market, and not surprisingly Google's Android OS powered the majority of smartwatches shipped last year, according to the report. That's no shock because the single most popular, and most widely available, smartwatch today, is Samsung's Galaxy Gear, which runs Android. (Check out these seven reason why you should NOT buy the Galaxy Gear.) There's also relatively little completion in the space these days.

Here are a few notable stats from the report:

Android runs on 61 percent of all smartwatches shipped globally in 2013, or approximately 1.2 million smartwatches

1.9 million total smartwatches were shipped in 2013

From Strategy Analytics:

"Android currently has several challengers in the smartwatch space, like Firefox and Pebble OS, but none of them are a major threat at this stage because of their relatively limited ecosystems and modest retail presence. Android’s main risk to its smartwatch dominance in the future will come from Apple iOS, Microsoft, and perhaps Tizen or COS."